It's real weird that we need sunscreen. Like, how did humans not evolve out of getting cancer from literally the daytime
-
-
Also skin cancer mostly hits after reproductive age so not a strong impact on which genes get passed on.
-
If your children starve because you die of skin cancer, it will have a selection effect, too. I suspect that senescence is not caused by lack of selective pressure after birth, but to make sure you don't outcompete your grandchildren.
- 1 more reply
New conversation -
-
-
Probably a lot to do with longevity. Skin cancer isn't killing all too much of the reproducing population.
-
Sunburn is absolutely exhausting, though
End of conversation
New conversation -
-
-
What was the life-expectancy back then? In the middle ages it was 31.3 yrs, for those who survived 25, the remaining l.e. was 23.3. Nowadays the average onset of skin cancer is 63. And, maybe you don't like to burn your skin plus the o2 layer.. seems like a no brainer

-
That low life expectancy in the Medieval era includes a high child mortality rate. If you survived childhood life expectancy was 60-70. Bingo!https://fakehistoryhunter.wordpress.com/2019/09/10/medieval-myths-bingo/ …
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.